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Hey guys, I know that most of the aftermarket fuel pumps you guys run are Walbro 255, but I looking for other brands and need a baseline. I already know that my L82 runs on 43.5 psi, but what's the Lph on the stock pump?
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Eric -
i would like to say 190, which is also the same as that of the TPI's believe it or not. Actually i put in an AC Delco (exact stock style, bolt-in, modular unit(same as 93+ j tanks) for the application of 98+ GTP, 3800 S/C. and works EXCELLENTlY, highly reccomended, mainly because anything else is overkill. I think i paid about $90 shipped from www.gmpartsdirect.com
cody -
Ok that's good to know because as I look around for some fuel pumps, I'm finding rating as low as 170 Lph to as high as 325 Lph. And all of these pumps are specified as 45 psi. So I'm thinking, how is it possible to have that much flow for moderate amount psi. I would think with 300 Lph for example, that it's almost as equivelent as running a higher psi. Then again I very well could be wrong and it's possible to have a constant 45 psi with a high flow rate. I just want a good flowing pump that can handle my 300 hp goal with 45 psi.EricComment
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a L67 pump will work just fine, what kind of vehicle you working on?Comment
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I'm building up a L82 motor going into a Chevette and need an external pump. I'm doing some mild upgrades but in the future like I said want to see 300 hp. So I want buy just one pump now and have it still be able to handle my hp later. The cheapest pump I could find is $95 and flows 160 Lph. So just wondering if that's on the brink of mininum flow or should definitely upgrade. MSD's fuel consumption calculator say that at 300 hp at 7500 on a 3100 will use 136 lbs/hr (~62.2 Lph) of fuel. I just don't want to buy a pump now and it not be able to feed my motor later on.EricComment
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the FPR regulates the PSI, the pump just runs.
here is a decent pump.. http://store.summitracing.com/partde...5&autoview=sku
that's 163 lphComment
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So is ~160 Lph enough for 300+ hp? I'm probably too concerned.EricComment
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if i remember right mine is 190 lph and has no problem with over 300 HPComment
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yeah, i didnt see that you want to run an external style pump, in which case you will NOT be able to use a stock style modular unit as i described above. Dave's got you on track, scour summit and see what they got. When you "upgrade" to an external or inline type of pump, the doors open up ALOT for aftermarket options, mainly because of V8 rwd applications that require them.Comment
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